Your favorite cartridge based off .30-06?

I hunted with a 30-06 for years, bought a 300 Weatherby and worked with reloads for both. Later bought a 280 A-bolt and got hooked on this caliber. Have hunted deer and elk with it. I reload using 160 grain Sierra boat tail spitzer bullets. It puts game down quicker than anything I have used in the past. Definitely my go to gun.
 
I'm curious what everyone's favorite cartridge is that's based off the .30-06? But more importantly, why is that your favorite? Is it the .280 Rem? 338-06 because you hunt elk? .30-06 because that's what you learned with? Just a friendly discussion that just might influence someone's future build.
6.5-06, 270, 280 REM., 8mm-06 Ackley Improved. I love them all. I have been using the 6.5-06 the most recently because it kills very well with light recoil. My last kill was a cow elk at 459 yards. Complete pass through and DRT. The 8-06 Ackley is a hammer. 200 grain Speer Hot Core at 2800 fps. Several elk and oryx taken and all DRT.
 
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